1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUNDERWRITERS LABORATORIES INC. CERTIFICATION REQUIREMENT DECISIONThis Certification Requirement Decision is prepared and published by Underwriters Laboratories Inc.(UL). It is normative for the a
2、pplicable UL Product Certification Program(s); however, it is currently notpart of the UL Standard(s) referenced below.Product Category (CCN): OBJT2Standard Number: UL 2353Standard Title: Standard for Single- and Multi-Layer Insulated Winding WireEdition Date: May 14, 2012Edition Number: 2Section /
3、Paragraph Reference:Subject: Zero Defect Fully Insulated Wire (FIW)DECISION:1.1 This Standard contains requirements for single and multi layer insulated winding wire used intransformers without interleaved insulation; and solid insulation and insulated winding wire withoutinterleaved insulation inte
4、nded for use in accordance with the following standards:a) Standard for Information Technology Equipment - Safety - Part 1: General Requirements, UL60950-1; or theb) Standard for Medical Electrical Equipment, Part 1: General Requirements for Safety, UL60601-1.c) Safety of power transformers, power s
5、upplies, reactors and similar products - Part 1:General requirements and tests, IEC 61558-1.These requirements are not intended to prohibit use of this type of winding wire in equipment covered bythe scope of other Standards when these requirements are determined to be compatible with thoseStandards
6、.1.1A This standard also contains requirements for enamelled Fully-Insulated Wire (FIW) that are deemedsuitable for use in end-products standards. The enamelled winding wire shall be a Recognized MagnetWire (OBMW2) designated ANSI/NEMA Type MW85.1.2 These requirements cover winding wires with a diam
7、eter between 0.05 mm (0.002 inch) and 5.0 mm(0.2 inch) and MW85 solvent-based enamel coated winding wires with a diameter between 0.040 mm and1.60 mm. that comply with Specifications for particular types of winding wires - Part 56: Solderable fullyinsulated (FIW) zero-defect polyurethane enamelled r
8、ound copper wire with nominal conductor diameter0,040 mm to 1,600 mm, class 180, IEC 60317-56.1.4 This Standard does not cover solvent-based enamel coated magnet wire. See the Standard forSystems of Insulating Materials - General, UL 1446. If the desired useage of the single- and multi-layerInsulate
9、d winding wire is above Class 105 (A), additional testing of the insulation system would berequired in accordance with UL 1446.Exception: As noted in Clause 1.1A.3.4.1 INSULATING LAYER - A single, concentric thickness of material that is detectable with an optical ormechanical measuring device. Enam
10、el, bond coats, etc. are not considered insulating layers.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULException: As noted in Clause 1.1A.4 Conductor DimensionsSingle and Multi Layer Insulated Wire :4.1 When determining the conductor dimens
11、ions, tin or any other metal on the conductor is allowed toremain on the conductor and included in the measurement. Solvent based enamels are to be removedprior to any measurements. Measurements of the diameter of a solid conductor are to be made over suchcoating by means of a machinists micrometer
12、caliper having flat surfaces both on the anvil and on theend of the spindle and calibrated to read directly to at least 0.001 inch or 0.01 mm, with each division ofa width that facilitates estimation of each measurement to 0.0001 inch or 0.001 mm. The maximum andminimum diameters at a given point on
13、 the conductor are each to be recorded to the nearest 0.0001 inchor 0.001 mm, added together, and divided by 2 without any rounding of the sum or resulting average.Fully Insulated Wire (FIW) :4.4 When determining the conductor dimensions solvent based enamels are to be removed prior to anymeasuremen
14、ts. Measurements of the diameter of a solid conductor are to be made by means of amachinists micrometer caliper having flat surfaces both on the anvil and on the end of the spindle andcalibrated to read directly to at least 0.001 inch or 0.01 mm, with each division of a width that facilitatesestimat
15、ion of each measurement to 0.0001 inch or 0.001 mm. The maximum and minimum diameters ata given point on the conductor are each to be recorded to the nearest 0.0001 inch or 0.001 mm, addedtogether, and divided by 2 without any rounding of the sum or resulting average.5 Number of LayersSingle and Mul
16、ti Layer Insulated Wire :5.1 Transformer winding wire with extruded or spirally wrapped insulation where the layers can beindividually tested for electric strength shall comply with one of the following constructional requirements:a) Basic insulation consisting of at least one layer of material, whi
17、ch complies with the ElectricStrength Test - Straight Sample, Section 8, for basic insulation;b) Supplementary insulation consisting of at least two layers of material, each of whichcomplies with the Electric Strength Test - Straight Sample, Section 8, for supplementaryinsulation;c) Supplementary in
18、sulation consisting of three layers of material for which all combinations ofthe two layers together complies with the Electric Strength Test - Straight Sample, Section 8, forsupplementary insulation;d) Reinforced insulation, intended for use in Information Technology equipment, consisting of atleas
19、t two layers of material, each of which complies with the Electric Strength Test - StraightSample, Section 8, for reinforced insulation; ore) Reinforced insulation consisting of three layers of materials for which all combinations of twolayers together complies with the Electric Strength Test - Stra
20、ight Sample, Section 8, forreinforced insulation.5.6 Solvent based enamel insulation used to coat the conductor is not to be counted as a layer whendetermining Basic, Supplementary and Reinforced insulation.STANDARD NUMBER: UL 2353 -2-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION O
21、RDISTRIBUTION WITHOUT PERMISSION FROM ULException: Solvent based enamel insulation used to coat the conductor shall be counted as a layer, if it:a) Complies with the Specifications for particular types of winding wires - Part 56: Solderablefully insulated (FIW) zerodefect polyurethane enamelled roun
22、d copper wire with nominalconductor diameter 0,040 mm to 1,600 mm, class 180, IEC 60317-56; andb) Is a minimum of three times the number of layers in accordance with 5.1 or 5.25A Number of LayersFully Insulated Wire (FIW) :5A.1 For FIW the following layer thickness requirements apply :a) a minimum l
23、ayer thickness of 0.001 mm and a diameter range of 0.040 mm to 0.16 mm or,b) a minimum layer thickness of 0.002 mm and a diameter range greater than 0.16 mm to 1.60mm.5A.2 The manufacturer must declare the type of insulation they are producing and also indicate thenumber of layers that will make up
24、their insulation, i.e. basic, supplementary or reinforced. For example,a manufacturer may declare that their 0.60 mm conductor coated with 50 layers (each layer a minimumof 0.001 mm) of insulation will be considered their supplementary insulation.6.8 For single and mulit-layer wires, Oone thickness
25、measurement is to be made in each of the 4quadrants of the circular sample, for each layer as shown in Figure 6.1. The measurements shall be madeat thickest point for each layer in a given quadrant. For example, a reinforced insulation wire consisting of3 layers should have three measurements made i
26、n each quadrant, one for the inner most layer, one forthe middle layer and one for the outer layer. The diameter of the conductor and the overall conductordiameter (conductor and all layers of insulation) shall also be measured in the same fashion as theindividual layers. The same logic applies for
27、basic and supplementary insulation. The thickness of anenameled, bond coat or other non-insulating layer is not required to be measured.This is generated text for figtxt.STANDARD NUMBER: UL 2353 -3-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM
28、 UL6.8 For fully insulated wires (FIW), one thickness measurement is to be made in each of the 4 quadrantsof the circular sample, reference Figure 6.1A. The measurements shall be made at thickest point in agiven quadrant.This is generated text for figtxt.Figure 6.1Optical measurement quadrantsSTANDA
29、RD NUMBER: UL 2353 -4-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL9.2 A straight piece of the finished wire construction, approximately 400 mm (16 inches) in length, withthe insulation removed at both ends, is to be twisted 360 degrees bac
30、k on itself for a distance of 125 5mm (5 0.2 inches). The load applied to the wire pair and the number of twists, shall be as provided inLoads applied to the wire pairs and number of twists, Table 9.1. The loop at the end of the twisted sectionis to be cut at two places to provide a maximum spacing
31、between the cut ends. Any bending to ensure anadequate separation between the two wire ends is to be arranged to avoid sharp bends or damage to theinsulation.Table 9.1Loads applied to the wire and number of twistsNominal conductor diameter Load, Number oftwistsOver, Up to and including,mm (inch) mm
32、(inch) N (lbf)0.05 0.0025 0.06 0.0020 0.05 460.07 0.0028 0.09 0.0035 0.10 410.100 0.004 0.250 0.009 0.85 0.19 330.250 0.009 0.355 0.014 1.70 0.38 230.355 0.014 0.500 0.019 3.40 0.76 160.500 0.019 0.710 0.027 7.00 1.57 120.710 0.027 1.060 0.041 13.50 3.03 81.060 0.041 1.40 0.055 27.00 6.06 61.400 0.0
33、55 2.000 0.078 54.00 12.14 42.000 0.078 5.000 0.200 108.00 24.27 3Figure 6.1AOptical MeasurementSTANDARD NUMBER: UL 2353 -5-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULFor fully insulated wire (FIW), the wire size range is only applicable
34、from 0.040 mm 1.60 mm.10.1 For all constructions, three samples each consisting of a straight piece of wire at least 305 mm (12inches) long is to be wound for 10 continuous and adjacent turns around a polished mandrel of thediameter specified in Mandrel diameter, Table 10.1. The mandrel is to be rot
35、ated with a rate of1-3revolutions per second (r/s) with tension applied to the wire that is sufficient to keep it in contact with themandrel. Elongating or twisting of the wire is to be avoided. Any suitable equipment is not prohibited frombeing used.Table 10.1Mandrel diameterNominal conductor diame
36、ter, Mandrel diameter,mm (inch) mm 0.2 mm (inch 0.01 inch)0.05 0.34 0.002 0.014 4.0 0.160.35 0.49 0.014 0.019 6.0 0.240.50 0.74 0.019 0.029 8.0 0.310.75 2.49 0.029 0.099 10.0 0.392.5 5.00 0.100 0.200 Four times the conductordiameterFour times the conductordiameterFor fully insulated wire (FIW), the
37、wire size range is only applicable from 0.040 mm 1.60 mm.14 Spark Test14.1 One hundred percent of production of each reel of wire is to be subjected to the Spark Test asdescribed in 6.7 of the Standard for Wire and Cable Test Methods, UL 2556.Exception: MW85 FIW. Wire that complies with the Specific
38、ations for particular types of winding wires -Part 56: Solderable fully insulated (FIW) zero-defect polyurethane enamelled round copper wire withnominal conductor diameter 0,040 mm to 1,600 mm, class 180, IEC 60317-56, is not required to besubjected to this test.RATIONALE FOR DECISION:Recently, Full
39、y Insulated Wire (FIW) where introduced into UL 2353. These revisions are intended toclarify specifics of how the constructions should be covered and evaluated.Copyright 2015 Underwriters Laboratories Inc.UL, in performing its functions in accordance with its objectives, does not guarantee or warran
40、t thecorrectness of Certification Requirement Decisions it may issue or that they will be recognized or adoptedby anyone. Certification Requirement Decisions are the opinion of Underwriters Laboratories Inc. inpractically applying the requirements of the standard. They do not represent formal interp
41、retations of thestandard under American National Standards Institute (ANSI) processes. UL shall not be responsible toanyone for the use of or reliance upon Certification Requirement Decisions by anyone. UL shall not incurany obligation or liability for damages, including consequential damages, arisi
42、ng out of or in connectionwith the use or reliance upon Certification Requirement Decisions. The electronic version of theCertification Requirement Decision is the current version and previously printed copies may be outdated.STANDARD NUMBER: UL 2353 -6-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FUR
43、THER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULThis document is published as a service to ULs certification customersSTANDARD NUMBER: UL 2353 -7-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULSTANDARD NUMBER: UL 2353 -8-No Text on This Page
